Divide \(4{1\over2}\) by \(3{1\over2}\)

An oil tin contains \(3{3\over4}\) litres of oil of which \(2{1\over2}\) litres of oil is used. How much oil is left over?

Ravi bought a curtain of length \(15{3\over4}\)m. If he cut the curtain into small pieces each of length \(2{1\over4}\) m, then how many small curtains will he get?

Observe the following and represent the shaded parts as fraction:
(i)
 
(ii)

(iii)

(iv) 

Write the fraction of shaded part in the following:
(i) 

(ii)

(iii)